Well, you wonder if brazing would work, but suspect that it would, based on your PB/SN solderinig. Sad to say, but PB/SN soldering is actually brazing. Not with bronze, but with PB/SN.
Soldering is fusing two similar metals together. Brazing is no more than "metal glue", wether it is bronze in between two iron pieces or PB/SN in between two copper (or copper made, like bronze or brass) parts.
I think the weld is made brittle from the exposure to hydrogen ... I have done some experimentation with a few inert gas mixes that seem to have some promise, but my skill at welding is so primitive that I am not sure it is effective ... might be something you would want to try ...
things I have tried in the bubbler that got what looked like interesting results when casually viewed were, rubbing alcohol, mineral oil, xylene and carbonated water ... inert gases I have attempted that produced some interesting results are argon, nitrogen and carbon dioxide ... maybe some afternoon when you got nuthin' else to do ???
B) Hydroxy is not the best gasmix to weld, the flame is very hot but the energy content is low, therefor some hydroxy welders-snake- oil-salesmen used an extra bubbler with an alcohol, like methanol, that will also give the colorless flame a visable color.
C) For good metal welding the flame contains to much oxygen; you are oxidizing the weld you may solve this by producing the gasses separately, and apply to the tip a mix with up to 5 times more H2.
Soldering works great but therefore is this super hot flame a bit overkill.
is it possible to use it for cars instsde of fuel?
mbaqader 7 months ago
Well, you wonder if brazing would work, but suspect that it would, based on your PB/SN solderinig. Sad to say, but PB/SN soldering is actually brazing. Not with bronze, but with PB/SN.
Soldering is fusing two similar metals together. Brazing is no more than "metal glue", wether it is bronze in between two iron pieces or PB/SN in between two copper (or copper made, like bronze or brass) parts.
:O))
rouelibre1 1 year ago
Try welding regular mild steel, not zinc coated screws. Zinc messes up a weld. I'd like to see that...
Watchdog1010 2 years ago
Hydrogen imbrittlement.
flipster12000 3 years ago
love that torch ... thing kicks some butt ...
I think the weld is made brittle from the exposure to hydrogen ... I have done some experimentation with a few inert gas mixes that seem to have some promise, but my skill at welding is so primitive that I am not sure it is effective ... might be something you would want to try ...
SmartScarecrow 3 years ago
thanks, the new drytube design really kicks out some gas.
I have heard of bubbling through acetone or other solvents. but like you, im am not a professional welder...
woodypc35 3 years ago
things I have tried in the bubbler that got what looked like interesting results when casually viewed were, rubbing alcohol, mineral oil, xylene and carbonated water ... inert gases I have attempted that produced some interesting results are argon, nitrogen and carbon dioxide ... maybe some afternoon when you got nuthin' else to do ???
SmartScarecrow 3 years ago
Part 1:
Good vid, underlining the safety isues,
can't been done enough.
You can not weld those screws, because :
A) They seemed galvanized.
B) Hydroxy is not the best gasmix to weld, the flame is very hot but the energy content is low, therefor some hydroxy welders-snake- oil-salesmen used an extra bubbler with an alcohol, like methanol, that will also give the colorless flame a visable color.
maituub 3 years ago
Part 2:
C) For good metal welding the flame contains to much oxygen; you are oxidizing the weld you may solve this by producing the gasses separately, and apply to the tip a mix with up to 5 times more H2.
Soldering works great but therefore is this super hot flame a bit overkill.
For doing juwelery it's fine.
Also for plastic flame-polishing (it's sootless).
...and turbo patato cannons. ;-)
Keep on bubbling.
maituub 3 years ago